package com.changgou.goods.dao;

import com.changgou.goods.pojo.Brand;
import org.apache.ibatis.annotations.Param;
import org.apache.ibatis.annotations.Select;
import tk.mybatis.mapper.common.Mapper;

import java.util.List;
import java.util.Map;

public interface BrandMapper extends Mapper<Brand> {
    /**
     * 根据商品分类名称查询品牌信息
     * @param categoryName
     * @return
     */
    @Select(value = "SELECT \n" +
            "\tb.name,b.`image`\n" +
            "FROM  tb_category c,\n" +
            "      tb_category_brand cb,\n" +
            "      tb_brand b\n" +
            "WHERE c.`id` = cb.`category_id`\n" +
            "AND cb.`brand_id` = b.`id`\n" +
            "AND c.name = #{categoryName}")
    public List<Map> findBrandListByCategoryName(@Param("categoryName") String categoryName);


}
